Finish your concrete repairs, remodel and home improvement projects faster with Rapid Set® Mortar Mix. A high-performance blend of Rapid Set® hydraulic cement and quality sand, Mortar Mix is your multipurpose, workable and fast-setting product for general concrete repair, anchoring and grouting, concrete sidewalks and walkways, concrete slabs and floors and decorative concrete work. Mortar Mix is durable in wet environments, sets in 15 minutes and ready for use in 1 hour. Apply Mortar Mix from ½ inch to 6 inches thick. One 55-pound bag yields approximately 0.5 cubic feet. One 25-pound box yields approximately 0.23 cubic feet.